Table 1 shows body weight, carcass, gastrointestinal and
meat quality traits according to on-farm fasting time (F0 or
F12) and lairage at the abattoir (L0 or L12). A significant
interaction of fasting and lairage was observed for the body
weight losses during fast and lairage and for the stomach
content. Twelve hours of fast increased body weight losses
during the on-farm fasting period. It also affected the cold
killing-out: F12 pigs had higher killing-out than F0 pigs. At
the moment of the establishment of the lairage groups, pigs
already differed on body weight (BW before on-farm fast).
Therefore, body weight was used as a covariable. Taking
this into account, body weight after on-farm fast (before the
beginning of lairage period) was not affected by lairage but
significant differences were observed after it (BW before
slaughter). Lairage also affected the killing-out and the
weight of the empty stomach.